{"product_id":"samsung-stratosphere-i405-replacement-battery-37v-1500mah-li-ion","title":"EB505165YZ Samsung Stratosphere i405 Replacement Battery 3.7V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Stratosphere i405 \/ SCH-i405 — 3.7V Li-ion Replacement Battery (EB505165YZ)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1500mAh Li-ion cell replaces the original EB505165YZ battery in the Samsung Stratosphere i405 and SCH-i405 QWERTY slider smartphone on Verizon's network. It also fits the Stratosphere 4G and SCH-i405U variants that share the same battery bay dimensions and connector. Voltage and chemistry match OEM spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStratosphere i405 and SCH-i405U platform fit:\u003c\/strong\u003e\n    These variants share a common battery bay at 64.40 × 50.90 × 5.00mm with the same three-contact connector. The BMS communication protocol is identical across the lineup, so one cell covers both the base i405 and the 4G-labeled units without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell in an SCH-i405 chassis and confirmed BMS handshake on first insertion. The protection circuit held charge-termination voltage at 4.20V and triggered low-voltage cutoff cleanly before cell voltage dropped below 3.0V under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After fitting this cell, run one complete discharge-to-charge cycle with fast charging disabled. The Stratosphere's fuel gauge IC was calibrated against the old cell's discharge curve — skipping this step causes the percentage counter to jump erratically during the first few days of use.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Stratosphere i405 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe i405 uses a coulomb-counting fuel gauge IC that tracks charge by measuring current flow in and out of the original cell. When a new cell goes in, the IC still holds the old cell's learned discharge curve in memory. The reported percentage drifts because the new cell's internal resistance profile doesn't match what the IC expects. One full discharge-then-charge cycle without interruption forces the IC to relearn the curve against the new cell's actual characteristics and restores accurate reporting.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops sharply under the combined load of the LTE radio, display, and processor — a voltage cliff the fuel gauge didn't predict because it hasn't recalibrated yet. The BMS reads the voltage drop as a fault and cuts power before the displayed percentage reaches zero. It is not a defective cell. Let the phone cool for two minutes, reboot, and allow a full uninterrupted charge to 4.20V before using it under heavy load again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405052411994,"sku":"BWCS-SMI405SL-1","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405052444762,"sku":"BWCS-SMI405SL-2","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405052477530,"sku":"BWCS-SMI405SL-3","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMI405SL-1.webp?v=1779369899","url":"https:\/\/batteryweb.com\/products\/samsung-stratosphere-i405-replacement-battery-37v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}